Stational and interanual variation of the phytoplanktonic biomass and clorophyll-a in front of Peruvian coast during 1976-2000

Authors

  • Sonia Sánchez Ramírez Instituto del Mar del Perú

Keywords:

Plancton, Fitoplacton, Biomasa, Fenómeno El Niño, Mar Peruano

Abstract

The distribution of the different masses of water produces significant changes in the spatial and temporal pattern of phytoplankton volumes and clorophyll. The EN events had negative effects on the primary production, with low average volumes <1,0 mL/m3, with oceanic species as dominant. The cold phases or "La Niña" caused increment of the phytoplankton biomass, with average volumes >3,0 mL/m3: The composition of the phytoplankton has also variations in cold phase, with larger upwelling areas, dominating small species of high range of reproduction of the first fase of the sucession. Between 1976-1987 and 1988-1999 significant changes, associated to periods of low and high primary production were observed.

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Published

2000-12-29

How to Cite

Sánchez Ramírez, S. (2000). Stational and interanual variation of the phytoplanktonic biomass and clorophyll-a in front of Peruvian coast during 1976-2000. Boletin Instituto Del Mar Del Perú, 19(1-2), 29–43. Retrieved from https://revistas.imarpe.gob.pe/index.php/boletin/article/view/164

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